Spa shell



FIG. 1 is a perspective view of a spa shell showing our design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a cross-sectional view taken along 5—5 of FIG. 4;

FIG. 6 is a cross-sectional view taken along 6—6 of FIG. 4;

FIG. 7 is a cross-sectional view taken along 7—7 of FIG. 4;

FIG. 8 is a cross-sectional view taken along 8—8 of FIG. 4; and,

FIG. 9 is a cross-sectional view taken along 9—9 of FIG. 4.

The broken lines in the drawings represent unclaimed portions of the spa shell and form no part thereof. 

The ornamental design for a spa shell, as shown and described. 